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Communication Dans Un Congrès Année : 1999

Coupling of radial and translational motion in small viscous bubbles

Résumé

In this article we are interested in the coupling between the translational and radial velocity of a bubble trapped in an acoustic field. We write a simple model for the momentum equation of the center of gravity of the bubble. An analytic solution is derived in the case of small radial and translational oscillations. This solution is compared to numerical solutions of the model equation and to full axisymmetric Navier-Stokes numerical simulations. Satisfying agreement is found and the non-linear model equations are applied to the case of sonoluminescing bubbles. In this case, the amplitude of the bubble motion is found to be negligible. This suggests that the influence of the varying pressure gradient on the translational motion is not as significant as originally anticipated in the case of sonoluminescence.
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Dates et versions

hal-01454898 , version 1 (07-02-2017)

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  • HAL Id : hal-01454898 , version 1

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Stéphane Popinet, Stéphane Zaleski. Coupling of radial and translational motion in small viscous bubbles. The 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, Jul 1999, San Francisco, United States. ⟨hal-01454898⟩
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